CVE-2024-28726
📋 TL;DR
This vulnerability allows a local attacker to execute arbitrary code on affected D-Link 5G CPE devices via the Diagnostics function. Attackers with local access can exploit this to gain full control of the device. Only D-Link DWR-2000M and DWR-5G CPE devices running specific vulnerable firmware versions are affected.
💻 Affected Systems
- D-Link DWR-2000M 5G CPE With Wifi 6 Ax1800
- D-Link DWR-5G CPE DWR-2000M
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attacker to install persistent malware, pivot to internal networks, intercept/modify traffic, or use device as botnet node.
Likely Case
Local privilege escalation leading to unauthorized administrative access, configuration changes, or data interception.
If Mitigated
Limited impact if device is isolated, has restricted local access, and proper network segmentation is implemented.
🎯 Exploit Status
Exploit requires local access but is straightforward once access is obtained. Public PoC available in GitHub repository.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available at time of analysis
Restart Required: Yes
Instructions:
1. Check D-Link support site for firmware updates. 2. Download latest firmware for your model. 3. Access device web interface. 4. Navigate to firmware update section. 5. Upload and apply new firmware. 6. Reboot device.
🔧 Temporary Workarounds
Disable Diagnostics Function
allDisable or restrict access to the Diagnostics function in device settings
Restrict Management Access
allLimit management interface access to specific trusted IP addresses only
🧯 If You Can't Patch
- Isolate affected devices in separate VLAN with strict firewall rules
- Implement network monitoring for suspicious activity targeting device management interfaces
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface: System Info > Firmware Version. If version is 1.34ME or earlier, device is likely vulnerable.Check Version:
curl -s http://device-ip/status.html | grep -i firmwareVerify Fix Applied:
After firmware update, verify version is newer than 1.34ME and test Diagnostics function with controlled payload.📡 Detection & Monitoring
Log Indicators:
- Unusual access to Diagnostics function
- Multiple failed authentication attempts followed by Diagnostics access
- Suspicious command execution in system logs
Network Indicators:
- Unusual outbound connections from CPE device
- Traffic patterns indicating command and control communication
- Port scanning originating from CPE device
SIEM Query:
source="dlink-cpe" AND (event="diagnostics_access" OR cmd="*" OR payload="*")